OBI, Anthony Emeka. Federalism, Nation Building and Ethnicity in Nigeria . African Journal of Education,Science and Technology (AJEST), [S. l.], v. 1, n. 1, p. Pg 219–234, 2013. Disponível em: https://ajest.org/index.php/ajest/article/view/311. Acesso em: 17 may. 2026.